Drill sharpener



W. H. WINEMAN.

DRILL SHARPENER.

APPLICATION man MAY 6. 1919.

Patented Jan. 31,1922.

UNITED; STAT-ES. PATENT OFFICE-.1,

WADE n. WINEMAN, OF CHICAGO, ILLI voIs, AssIeNon T0 SULLIVAN ivIAoHmEgi COMPANY, A CORPORATION OF MASSACHUSETTS. 1 y 4 DRILL SHARPENER. I V

Application. filed May 6, 1919. Serial m.295,os1;

T 0 all whom it may concern:

Be it known that I, WADE H. WVINEMAN, a citizen of the United States, residing at Chicago, in the county Of Cook, and State of Illinois, have invented certain new and useful improvements in Drill Sharpeners, of which the following is a full, clear, and exact specification.

My invention relates to drill sharpeners, and more particularly to the upsetting mechanism mounted thereon, the rincipal objects of the present invention being to provide a new and improved means for alining the vise, dolly holder, and pneumatic hammer, for retaining the dolly in place, and for directing the exhaust of fluid from the pneumatic hammer to the interior of the drill sharpener frame.

Certain embodiments which my invention may assume in practice are illustrated in the accompanying drawings.

In these drawings,

Fig. 1 is a side elevation of a part of a drill sharpener embodying one form of my improved upsetting mechanism.

Fig. 2 is a plan view of the dolly holder and dolly with the cover or upper guide removed.

Fig. 3 is a front elevation of the dolly and dolly guide, taken substantially on the line 3-3 of Fig. 1.

Fig. 4 is a longitudinal section of the hammer, dolly holder, and vise, illustrating the alining means and a modification of the hammer. V

Fig. 5 is a planview thereof.

Fig. 6 is a diagram subsequently referred to in the specification.

In these illustrative constructions, Ihave shown a drill sharpener having a base or frame 1, a vertical. swaging hammer 2 operated by fluid pressure and controlled byia lever (not shown), a pinning hammer 3 and tool 4:, a vise 5- for clamping the work during the upsetting operation, an upsetting hammer 7, and a lever 8 which preferably controls-both the upsetting hammer and the vise. The fluid pressure foroperating the difi'erent parts of the drill sharpener is taken from a pipe 9 through an oiling mechanism 10 which adds a lubricant to the pressure fluid, and through an upright pipe 11 from which it is distributed tothe pinning hammer 3 through a pipe 12, to the upset- Specification of Letters Patent. 5 Pate t d Ja 1922 ting hammer'7 through a valve box 13 and pipe 14 and to the vise operating mechae nism through the valve box 13 and a 'port (not shown) to a cylinder 15 in which a p ston is re'ciprocated for controlling the yise. The pressure fluid for the hammer 2 is preferably conducted by a pipe extending through the frame 1 from the oiling mechanism 10. I

' As is clearly shown in Figit, the pn'e'u matic upsetting hammer '7, the dolly guide 16, and'the lower. jaw 6 of the vise 5' are preferably mounted on a single base plate 17 which is bolted to the frame 1 by bolts i 18 passed throughholes'18 in a flange 19 castv integral 'With the base plate 17.

This construction gives several material advantages, as follows: The cylinder, piston, I

dolly, and lower vise jaw may be removed as a unit; the plston and dolly are always in proper alinement; the lower vise aw is easily removable; and the pressure of the upper vise aw on the workor on the lower jaw will reinforce the holding action of the bolts 18 so to insure that the upsetting mechan sm is'held rigidly in place during the upsett ng operation 7 The exhaust from the hammer be conducted by a pipe 20 .(seeFigql) to they;

interior of the frame, but preferably it is conducted through a passage 21 cored in the cylinder. It will be notedthat thisjpre; 1 ferredconstruction lightens the machine, and reduces theitime and cost ofIinstallation and repair. [The upsetting hammer 7 may be heldrig dly to the base 17 by'bolts 22 passed through lugs 23 formed on the (Fig. 1) or on one cylinder 25 extending around the curved-side thereof 1 (Figs. 4: and 5) and. is held inj'a mating dove-tail groove in thebase plate 17 by a i bolt 26 which isthreaded into ahole'extend ing through the base plate 17 in such a man nerthat the front end of thebolt may be forced into a depression 27 formed inithe collarof the jaw 6,jas'is clearly'shown. A look nut 28 keeps the bolt 26 from turning and so insures theproper alinement of the work held against the lower; jaw, and. a dolly 29. By thisarrangement the partsare V held in'solid relation very securely and since the point or area of application of force (i. e. the point, of area ofcontact) between the bolt 26 and the vise jaw 6 lies within the space which is included within the peripheral surface of the bolt produced and the force is applied in a direction parallel to the axis-0f the bolt, it will be obvious that avery solid construction must result as, for

the jaw to loosen it is'necessary for all the threads on the bolt to yield. It \villalso be'noted that the bolt, being supported by its threaded socket, is supported at all points around a" cylindrical surface and so is supported among others, by points in a transverseplane so disposed that a triangle whose apices' they form willfsurround the line parallel to the axis of the bolt and passing through the point of application of force to the jaw. This will be more clearly under- 7 stood by referring to the diagram avhich will coincide with the lines C.D, D E and,

E O' enclose a prism within which 'the area constltutmg the contact area. between t the bolt 26 and the die 6 will lie, and it will be'noted that these three points, C, D. and E are so disposed relative to the axis F that no plane including the aXisF can be drawn so as to have all three points on the same side of it, It will be apparent since the bolt 26 is supported as shown that there will beno tendency for the jaws to become loose unless all the threads yield and that there can be no possible bending, as might occur with a member engaging the j awonly outside of the means which holds it in position. v, This dolly may be formed with a square body and a conical head, as is common construction,,the body, in the form of my improvement herein shown, being reciprocatively mounted in a dolly guideflficomprismg. a base 30 and side walls 31. formed 1n the baseplate 17, and a cover 32 having depending flanges 33, the cover being hinged, as is shown at 34, to a boss 35 cast integral with the base plate 17. This cover 32 may be swung out of the way to permit the easy removal'of the dolly,- or it may be securely held against the sidewalls 81 by springs 36 pivoted, as shown at 37, to the base plate 17 and having hooked ends 38 adapted to slide overthe sides of an [Vi-shaped projection on the cover32 to the central depression therein. Thesprings yield readily to a pull or to a pressure tending to force the springs onto or off from the projection to hold the cover in place or to permit the cover to be swung back for changing dollles.

Cooperating with the dolly to return the latter to a retracted position free from the work and the movable vise jaw, aresprings 39 which carry on their front ends hooks -10 adapted to snap into depressions 41 in the dolly block, and which carry on their opposite ends suitable means, such as eyes l -2, whereby these ends may be retained in a 'fixed position relative to the dolly holder.

In the form of my improvement shown herein, these eyes 42 encircle the heads of bolts 22. To provide the necessary clearance for the movement of thehooked ends 40 in the sides of the dolly'holder or guide 30, the side. walls 31 and the depending flanges of the cover 32 are spaced apart, as is shown at 4L3, except at their front ends at, where the side walls and flanges contact to hold the cover and base in their properspaced relation. 7

Attention is directed to the fact that the lower vise jaw 6 is easily removed by with,

drawing the bolt 26 from contact with the jaw, sliding the j aw rearwardly for a short distance (about a quarter of an inch), and then lifting this jaw free from the plate ll.

' When replacing the aw or when inserting another one, the order of these steps is just reversed. If the work should not, be properly done due to an improper alinement of the upsetting mechanism, the plate 17 with all the parts that need to be alined are removed as a unit and the proper alinement may be given the elements of the unit on a bench where the parts will be most accessible. If the operator should attempt to adjust the parts properly when they are mounted on the sharpener frame, the relative position of the upper-vise jaw, upsetting hammer, and vertical hammer render a proper adjustment almost, if not entirely, impossible.- It should furtherbe noted that the vise is always clamped onto the work before the upsetting hammer is set'into opera- 2 tion, and since the'pressure exerted by the vise operating mechanism often reaches 100,000 pounds, this'pr'essure alone is sufficient to retain the upsetting unit in place, and when taken with the holding power of the bolts it will beseen thatthe drill sharpener will never be subjected to arack or vibration due to an improper movement of the upsetting hammer, dolly guide, or lower visejaw, or to loose connections. 7

In the form of my improved dolly holder herein shown, it will be noted that the parts are strong and. durable, that no. adjustment of the parts is necessary, that no tools of' any kindare required,-a nd that the springs hold the cover against rattling and shaking when the hammer is operated; The (lollies may be easily interchanged or the working face of a dolly inspected WltllOLltllQCGSSlt3t- 111g the removal and the possible misplacing raster or parts of the dolly holder, it being apparent that all of these parts are com' ccted directly or indirectly to the'baseplate' l7 lVhile I have hereinshown and described,

for the purpose of illustration, certainjspes.

cific forms of the invention, it is to the understood that the same have been choseneior illustrative purposes only, and that eXten 2. In a drill sharpener, an integral member comprising a base plate, a dolly gu de,

meanscarried by said baseplate for holding a pneumatic cylinder in fixed relation thereto, and a cylinder exhaust passage formed in said base plate. I v i 3. In a drill sharpener, an integral menibercomprising a base plate, a dolly guide, a vise jaw retainer, means carried by'said base plate for holding a pneumatic" cylinder in fixed relation thereto; and a cylinder exhaust passage formed in said base.

4. In a drill sl1arpener,-tl1e combination comprising a base plate havinga dovetailed recess formed thereon, a jaw having amating' dovetailed projection, and means for holding said projection and plate inanated relation comprising aperipherally supported member engaging: said jaw at a point within the periphery of said member'produced. f I

l 5. In a drill sharpener, the combination comprising a base plaitehaving 'a dovetailed recess formed therein, a jaw having a mating dovetailed projection, and means for holding said projection and plate in mated relation comprising 'a member engagingsai l jaw and supported at at least three points spaced from the axis or sa d member and so disposed that all three points are on the same side of no. plane that can be drawn l.0 .l1l-

clude the axis of said member, said member engaging said aw at a polntllyingwithin the space enclosed. bytlie'three planes which can be drawn parallel to said axis and each including a pair of said points.

6. In a drill sharpener, the combination comprising a base plate havinga dovetailed recess formed therein, a jaw having a dovetailed projection, and a bolt adjust-ably mounted in said base plate for holding said projection and recess in mated relation, said bolt engaging said jaw at a point such that a line parallel to the axis of the bolt and passing through said point will lie within the periphery of said bolt.

1 g means comprising cooperating gu ding members, and resilient means extending between said members and operative to maintai'nth'em in'dolly guiding relation.

, A 8. a drill sharpener, a dolly, dolly guidin means comprising cooperating hinged giiicling members, and resilient means exre t g'betwe'en said members-and operative to inaintain them iii dolly guiding relation, 9. In a drill sharpener, a dolly," dolly guiding mean's comprising cooperating guiding members, and resilient means mounted'on one ofsaidmembers and cooperating with iiifdollyggui'ding relation. "10. In drill sharpener-,the combination compris dolly, a ba'se' plate, a dolly guide having'ia base and 'side' walls'formed thereon, and'fa 'cov erphingedly' mounted on sai'd'base plate and adapted, to cooperate with saidbase'to-hold sai'd'klolly. ;.-1-1."-Is e drill sharpener, the combination mprisinga" dolly, abase plate, a dolly de havingjabase and sidewalls formed theother tore tain said members normally thereon, a cover-h ngedly mounted on sald base plate andadapted to cooperate with said"base tocheldfsa'id dolly, and resilient means-roe holding said cover againstsaid base. 1 j 1 I 1291M. drill sharpener, the combination comprising-fa dolly', a baseplate, a dolly guide having'a base and sidewalls formed thereon, a cover mounted on said base plate and adapt-ed to cooperate with said 'base to hold sa i *dollyfand resilien't "means for holding saijd cover againstfsaid base. .13. In a drill sharpener, the combination tem ering; dolly,"abasejplate a dolly giii'de'l vin'g a base an'd 'side waflls formed thereoin 'acover mounted' on'said base plate and adapted. to cooperate withfsaid base to raids-aid dolly, and resilient means hinged "se for holding said cover against base late-and ptedpto cooperate with saidbase to hold said dolly, and hinged resilient means for holding said "plate "QainstSaid base Inaflilrill shar jeueig'a dolly, resilient means for retaining thesame in a position retracted'from lts work, and dolly guiding thereon, laf coVer hingerlly mounted on said i means comprising cooperatingdolly guiding .members and resilient means extending between said members and normally maintaining them in dolly guiding relation.

16. In a drill sharpener, a dolly, dolly guiding means comprising cooperating hinged dolly guiding members, resilient means mounted on one of said members and cooperating with the other thereof to hold said members in dolly guiding relation, and means for retaining said dolly in a position out of contact wit-h. the work comprising resilient means cooperating with said dolly at the rear of said first mentioned resilient means. i

l7. In a drill sharpener, the combination comprising a dolly guide having a base plate and side walls, a cover for said guide having flanges thereon, means for holding said side walls and flanges spaced for, a part of their length, a dolly, and means passing through the space between said walls and flanges and engaging the dolly for nor-'' mally holding the dolly retracted.

18. In a drill sharpener, the combination comprising a base plate, a dolly guide having a base formed thereon, a hinged cover for said guide, projections on said, cover, and resilient means cooperating with said projections to hold said cover on said base.

19. In a drill sharpener, the combination comprising a base plate, a dolly guide having a base formed thereon,a cover for said guide, projections on said cover, and resilient means cooperating with said projections to hold said cover on said base.

20., In a drill sharpener, the combination comprising a base plate, a dolly guide .having a base formed thereon, a'cover for said guide,a substantially M-shaped projection on said cover, and resilient means cooperating with said projection to hold said cover on said base. i

21. In a drill sharpener, the combination comprising a base plate, a dolly guide mounted thereon, a dollyhaving a retracted and a forward position in said guide, a

hinged cover for said guide, resilient means for holding said cover on said guide, and resilient means for holding said dolly in the retracted position.

22. In a drill sharpener, the combination comprising a base plate, a dolly guide mounted thereon, a hinged cover for said guide,resilient means for holding said cover on said guide, a dolly having a retracted and a forward position in said guide, a pneumatic hammer attached to said plate, and resilient means attached to said hammer and dolly for holding said dolly in the retracted position.

23. In. a drill sharpener, the combination comprising a base plate, a dolly guide mounted thereon, a hingedcover for said guide, resilient meanshinged to said plate for holding said cover on said guide, a dolly having a retracted and a forward position in said guide, a pneumatic hammer attached to said plate, and resilient means attached to said hammer and dolly for holding said dolly in a retracted position.

24. Ina drill sharpener, a base plate having a dove-tailed recess formed therein, a

vise jaw having a mating dove-tailed projection formed thereon, a dolly guide base formed in said plate, a bolt adjustably mounted in said plate beneath said base and adapted to hold saidprojection and recessed" plate in mated relation, a hinged cover for said guide, and resilient means hingedly mounted on the plate for retaining the cover on said guide.

25. In a drill sharpener, a base plate having a dove-tailed recess formed therein, a

vise jawhaving a mating dove-tailed'prd,

jectionformed thereon, a dolly guide base formed in said plate, a bolt adjustably mountedfin said plate beneath said base and adapted to hold said projection and recessed plate in mated relation, a hinged cover for said guide, resilient means hingedly mounted on the plate for retainingthe cover on said guide, a pneumatic, hammer held in fixed relation to the plate, a dolly in said guide, and a resilient connection between said hammer and said dolly.

26, In a drill sharpener, a plate, a hammer piston, a dolly, avise jaw, and means mounted on said plate for'holding said piston, dolly, and jaw in alinement, said means including a hinged dolly guide cover and means for detachably retaining the jaw. I

27. In a drill sharpener, an upsetting I WADE H. .IVINEMAN. 

